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윤영대(Young Dae Yoon),이종섭(Jong Sub Lee),김흥철(Heung Chul Kim),조재만(Jae Man Cho) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
A next generation NU 1.8L/2.0L gasoline engine has been developed by Hyundai-Kia Motor Company for new vehicles. Independently developed Nu Engine will be applied to new Elantra in North America market. The new engine achieved high performance and improved fuel economy by applying dual continuously variable valve timing and two step variable induction system, which has enabled both low and mid speed torque and high speed power. In addition reduced noise level was realized by optimizing lower structure components and induction parts with maintaining lightweight. The engine meets U.S. SULEV and EURO 5 emission regulation in terms of green environment protection. The paper presents overview of a new I4 gasoline engine (Nu Engine) as well as features of each technology which embodies well tuned engine with respect to high engine performance, low fuel economy, emission and reduced NVH.
말라리아 위험지역에서 채집된 말라리아 매개모기 Anopheles sinensis의 피레스로이드계 저항성 대립형질 분석
최광식(Kwang Shik Choi),이승열(Seung-Yeol Lee),황도운(Do-Un Hwang),김흥철(Heung-Chul Kim),장규식(Kyu-Sik Chang),정희영(Hee-Young Jung) 한국농약과학회 2016 농약과학회지 Vol.20 No.4
Malaria is mainly transmitted by Anopheles sinensis which is dominant species in malaria highrisk area, northern part of Gyeonggi province in Korea. Pyrethroid insecticide is used for malaria vector, An. sinensis in Korea and the previous investigation consistently reported insecticide resistance from the vector. This study investigated insecticide susceptible and resistant alleles from An. sinensis and the status of malaria vector control in malaria high-risk area. For the study, An. sinensis collected from Paju, Gimpo and Ganghwa were sequenced for kdr detection. In Paju, there was no homozygous susceptibility and all of tested samples had homozygous or heterozygous resistance. There were 6.7% for susceptible homozygosity and 93.3% for resistant homozygosity or heterozygosity in Gimpo. Furthermore, the percentages of homozygous susceptibility and homozygous or heterozygous resistance in Ganghwa were 5.7% and 94.3% respectively. The results showed that the frequency of the insecticide resistance from An. sinensis in malaria high-risk area were increased much more than the previous investigation. Hence, this study suggests that malaria vector control programs should have to be prepared for the management of pyrethroid insecticide resistance.
권혁민 ( Hyuk Min Kwon ),유선영 ( Sun Young Yu ),노의선 ( Eu Sun Ro ),이성원 ( Sung Won Lee ),조용 ( Yong Cho ),임소이 ( So Yi Lim ),김흥철 ( Heung Chul Kim ) 대한주산의학회 2007 Perinatology Vol.18 No.4
Retroperitoneal hemorrhage caused by intra-abdominal vascular injury during pregnancy or puerperium is rare, but a very fatal complication. Massive retroperitoneal hemorrhage causes the high mortality rate of mother and fetus. But the difficulty of diagnosis and rarity may delay prompt treatment. We experienced a case of massive retroperitoneal hemorrhage, which was caused by a suspected left lumbar artery aneurysm rupture on the fifth day of vaginal delivery. The patient was successfully treated by surgery and arterial embolization. We reported this case with a brief review of literature.